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No. 612,249. Patented Oct. Il, |898. H. K. KING.

CUT-OFF MECHANISM FUR BRICK MACHlNES.

(Application iled Dec. 28, 189711.),

ino Model.) 2 sheets-sheet'l.

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No. 6|2,249. Patented Oct. Il, |898. H. K. KING.

CUT-oFF MEcHANlsM FUR BmcK MACHINES.

(Application filed :Dev:` 28, 1897.)

2 Sheets-Sheet 2.

(No Model.)

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Attorney.

Niinn STATES l PATENT OFFICE,

IIOIVARD K. KING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THECHAMBERS BROTHERS COMPANY, OF SAME PLACE.

CUT-OFF MECHANISIVI FOR BRICK-MACHINES.

SPECIFICATION forming part of Letters Patent No, 612,249, dated October11, 1898 Application iiled December 28, 1897. Serial No. 663,828. (Nomodel.)

.T0 @ZZ whom t 11m/y concern.-

Be it known that I, HOWARD K. KING, a citizen of the United States, anda resident of the city and county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inCut-Off Mechanism for Brick-Machines, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, of which- Figure l, Sheet l, is a plan view, the tappet-casingbeing cut off. Fig. 2 is an elevation from the tappet-Wheel side, thetappetwheel and cam-case and frame having been removed. Fig. 3, Sheet 2,is a front end elevation, the casing being cut away. Fig. 4is anelevation, corresponding to Fig. 3, of a modification of the invention.

This invention relates more especially to the wire cut-off mechanism forbrick-machines shown and described in Letters Patent of the UnitedStates- No. 362,204 to Cyrus Chambers, Jr., bearing date May 3, 1837. Aswill be seen by reference to the said patent, the tempered clay issuesfrom a die of the machine in the form of a continuous bar, rectangularin cross-section, and is delivered y upon an endless belt E, termed theregulating-belt, and is severed into bricks of uniform size by means ofa series of Wires mounted upon a rotatable wheel G, journaled above themoving bar of clay, which wheel is driven by the regulating-belt(through the movement of the clay bar resting thereupon) in conjunctionwith a positively-driven friction or helping beltjs, that passes over atappetwheel J on the shaft of the cut-off Wheel, the movement or path ofthe cut-off wires being governed by a rotary cam J, against which thetappets of said tappet-Wheel consecutively bear in a manner to sever thebar of clay at right angles into brick lengths.

lThe object of my invention is to improve the construction of the camand tappet-wheel mechanism, whereby certain advantages are secured overthe said prior construction, as hereinafter explained.

Referring now to the drawings accompanying this speciiication andforming a part thereof, 1 designates the regulating-belt,whichrcceives'the bar of clay 3 as it issues from the die of thebrick-machine. (Not shown.) 4 is the rotatable'cut-oft wheel, mountedabove the forward end of said belt upon a shaft 5,

that is journaled in bearings of a suitable supporting-frame 6. Thiswheel carries the cut-od wires '7, secured to the free ends of the limbsof U-shaped elastic bows 8, that are fastened to the radial arms 9 ofsaid Wheel.

10 is the tappet-Wheel, mounted upon the shaft of the cut-off wheel andhaving adjacent to its periphery a series of laterally-projectin gtappets T T2.

ll is the cam for governing the movement of the cut-oft wheel, and thusthe path of the cut-off wires, in cutting off the bar of clay throughthe tappets which bear upon the cam as it and tappet and cut-od wheelsrotate, as

, hereinafter described. This cam is mounted uponl the shaft 12 of theforward pulley 13,

is a double-heart-shaped cam and the tappets are all on one side of thetappet-wheel. I substitute for this cam one of the approximately S shapeshown in the accompanying drawings, which, however, I make in twosimilar parts or limbs in different vertical planes, one of which parts(marked lla) being to one side of the tappet-wheel, and the other(marked 1lb) to th'e opposite side, and I use an even number oftappets-usually six, as in the present instance-corresponding with thecut off wires, three of which tappets (marked T) are upon one side ofthe tappetwheel adapted to bear against the cam-limb 1l on that side andthree (marked T2) on the opposite side of said Wheel to bear against thecam-limb llb and those of the one set alternating with those of theother set, as seen in Fig. l and shown by alternating full and dottedlines in Fig. 2.

l5 is the usual dust-proof casing for protecting the cam andtappet-wheel and for containing a quantity of oil, into which part ofIOO the cam dips in its rotation, and thus the contact-surfaces of thelatter and the tappets are lubricated.

The shape of the Working faces of the camlimbs is such, as shown, thatas the cut-off wheel and the cam rotate in the direction of the arrowsin Fig. 2 and a tappet, as one of the set T2, is bearing against alimb`of cam, as 1lb, and the corresponding cut-ott` device approachesthe line where the complete severance of the clay will shortly occur(when the movement of the cut-ott wheel must be comparatively slow) thesucceeding tappet, as of the set T, reaches the free end of the othercam-limb, as llf. At this instant both ot said tappets are bearingagainst the cam and both limbs of the latter are governing the movementof the cut-off Wheel; but as the cam and tappet-wheel continue theirrotation the tappet T reaches a certain point, at about a, Fig. 2, ofcam-limb ll, when the limb 1lb has left the preceding tappet, the bar ofclay has been completely severed by the Wire corresponding to the lattertappet, and it is then necessary to govern the movement of thesucceeding tappet T'-that is, in eitect, the cutoff Wheel-for thecorresponding wire to begin the next cutting through the clay bar. Itwill, ot' course, be understood that the shape of the cam-limbs beyondthe said point is such, as shown, as to effect the desired result.

In Fig. 2 of the drawings the view is taken at a time when the cut-oft'wire adjacent to or corresponding with a tappet l2 is approach ing theline or plane connecting the axes of the tappet-wheel and cut-of-wheelshaft 5 and the cam-shaft 12-that is, immediately before the cut-ottwill be completed-at which time said tappet, as shown, is riding againstthe smaller diameter of the cam-limb 11b and the next following tappet Thas ridden a short distance against the larger diameter of the othercam-limb lla.

By the form, construction, and arrangement of the cams and tappet shownand described I am enabled to so govern the cutott wheel as to cause thecut-ott wires to travel in substantial unison with the moving bar ofclay not only during the actual cutting-off operation, but immediatelyafter it has been completed and before the delivery of the brick to themore rapidly running ott-bearing belt described and shown in the saidChambers patent and indicated by the dotted lines 1G in Fig. 2 and shownbroken off in Fig. 1 of the drawings of my improvement, and thereby thejump and blows that were incident to the operation of the prior cut offmechanism to which my improvement relates are-obviated and the parts arecaused to work smoothly and uniformly.

Another and an important advantage of my improvement is that with acut-,oft Wheel of a given diameter a much thicker bar of clay may besevered into rectangular brick lengths than was possible with said priorconstruction, for in the former the only limit to the diameter or sweepof the cam is that which shall permit the free ends of the cam in itsrotation to clear the cut-off and tappet-wheel shaft 5, while in theprior construction the diameter of the cam was necessarily considerablymore limited, as the length of the radius of the cam could not exceedthe distance between the tappets.

By locating the tappets nearer to the line of the tappet-wheel shaftthan are the cut-off wires I am enabled to secure the largest possibleadvantage of my improvement with a cam of the greatest possiblediameter.

The construction of the invention may be modified without departing fromthe essential principle of its operation-for example, as illustrated inFig. a of the drawings,where in one of the cam-limbs, 1l, is on one endof the shaft l2 and the other limb, 1lb, on the opposite end, and thetappet-wheel is practically in two parts, one of which, 10, is providedWith the series of tappets T2 for the cam-limb 11b and the other part,10, with the series of tappets T' for the limb llk It will be obviousthat while the arrangement of these parts differs somewhat from thatshown in the preceding figures of the drawings the mode of operation andresult are the same.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. The improvement in cut-off mechanism of thecharacter recited, consisting of the combination of the rotatablecut-ott wheel, the rotatable cam of the form, substantially as shown andcomposed of two similar limbs in different planes, and a rotatabletappet- Wheel having an even number of tappets, one half of which areadapted to coact with one of said cam limbs, and the other half with theother cam -limb in alternate sequence, substantially as and for thepurpose described.

2. The improvement in cut-off mechanism, of the character recited,consisting of the combination of the rotatable cut-oit wheel, therotatable tappet-Wheel having an even number of equidistant tappets; onehalf thereof upon one side, the other half on the opposite side of thesaid tappet-wheel; those of the one side alternating with those of theother side and the rotatable cam of the form substantially as shown, andcomposed of two limbs with similar cam faces, in different planes andadapted to coact with said tappets in the manner described,substantially as and for the purpose set forth.

In testimony whereof I have hereunto affixed my signature this 16th dayof December, A. D. 1897.

HOVARD K. KING.

Vitnesses:

WALTER C. PUsEY, JOSHUA PUsEY.

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